# Carboniferous

> fifth period of the Paleozoic Era

**Wikidata**: [Q133738](https://www.wikidata.org/wiki/Q133738)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Carboniferous)  
**Source**: https://4ort.xyz/entity/carboniferous


## References

1. [Source](https://zenodo.org/records/10659112)
2. International Chronostratigraphic Chart 2023/09
3. Source
4. Integrated Authority File
5. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=21177)
6. CGMW ICS colour codes
7. Nuovo soggettario
8. Freebase Data Dumps. 2013
9. YSO-Wikidata mapping project
10. BabelNet
11. National Library of Israel
12. KBpedia
13. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)